Results 21 to 30 of about 3,855,615 (290)

Experimental Study of the Concrete Cracking Behavior of an Immersed Tunnel under Fire

open access: yesBuildings, 2023
This study investigates the impact of fire on the cracking behavior of immersed tunnels. A reduced-scale (1:5) model of an immersed tunnel was constructed to conduct fire tests in both traffic tubes using the HCinc curve as the applied fire.
Jintao Duan   +3 more
doaj   +1 more source

Effect of Crack Interval on Multiple Crack Propagation Behavior

open access: yesJournal of Computational Science and Technology, 2007
In the authors' previous study, fatigue crack propagation tests were performed using four-point bending specimens with multiple parallel edge notches at regular intervals of 10 mm. In this study, similar tests were carried out using the specimens with crack intervals of 5 mm or 2.5 mm.
KAGAWA, Hiroyuki   +3 more
openaire   +2 more sources

An investigation into cracking in nickel-base superalloy repair welds [PDF]

open access: yes, 2010
The nickel-base superalloy Rene 80 is considered very susceptible to liquation and strain-age cracking. Material in the solutionised condition is welded using the Cold Metal Transfer, or CMT process (with ductile filler alloy) and autogenously using a
Colegrove, Paul A.   +3 more
core   +1 more source

Liquation and post-weld heat treatment cracking in Rene 80 laser repair welds [PDF]

open access: yes, 2012
An extensive experimental study on a nickel-based superalloy, Rene 80 using autogenous laser welding has been undertaken to determine the effect of the process parameters and weld bead geometry on cracking in the as-welded and post- weld heat treated ...
Colegrove, Paul A.   +7 more
core   +1 more source

Optimal operation of tubular reactors for naphtha cracking by numerical simulation [PDF]

open access: yes, 2009
Process gas temperature profile and steam-to-hydrocarbon ratio in the feed have important impact on product yields and coking rate in tubular reactors for naphtha cracking.
G.‐Y. Gao   +8 more
core   +1 more source

Stress State and Key Influencing Factor in High Burnup Nuclear Fuel Particle

open access: yesYuanzineng kexue jishu, 2022
Advanced nuclear reactors are currently moving toward longer fuel cycles and higher burnup levels. Besides, high burnup levels can improve fuel economy and reduce the total amount of spent fuel in reactors.
LYU Junnan;YANG Shuo;ZHAO Yi;LI Qun;LONG Chongsheng
doaj  

Fatigue crack growth behavior of surface crack in rails

open access: yesProcedia Engineering, 2010
AbstractRolling contact fatigue damages on the surface of rail such as head check, squats are one of growing problems. Since rail fracture can cause derailment with loss of life and property, the understanding of rail fracture mechanisms is important for reducing damages on the surface of rail.
Seo, Jungwon   +3 more
openaire   +1 more source

Do Chimpanzees Use Weight to Select Hammer Tools? [PDF]

open access: yes, 2011
This study was financially supported by a Japan Society for the Promotion of Science Predoc Grant (http://www.jsps.go.jp/english/e-summer/index.html) to Cornelia Schrauf.
Josep Call   +19 more
core   +2 more sources

Cracking directions in multiaxial low cycle fatigue at high and room temperatures [PDF]

open access: yesFracture and Structural Integrity, 2017
Cracking direction in multiaxial low cycle fatigue is an important research subject because crack initiation and propagation behavior is a physical background for developing an estimation method of multiaxial low cycle fatigue lives. However, there are a
Masao Sakane, Takamoto Itoh
doaj   +5 more sources

Experimental and numerical modeling of deformation-cracking mechanics of 3D-printed rock samples with single fracture [PDF]

open access: yes, 2023
The analysis of mechanical response and deformation-cracking behavior contributes to the high-efficiency extraction of geo-energy and long-term safety of underground engineering structures.
Tian, Jun   +3 more
core   +1 more source

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